83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
#include "navigatorview.h"
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#include "graphicsview.h"
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#include "opacityhelper.h"
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#include <QMouseEvent>
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#include <QDebug>
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NavigatorView::NavigatorView(QWidget *parent)
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: QGraphicsView (parent)
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, m_viewportRegion(this->rect())
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, m_opacityHelper(new OpacityHelper(this))
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{
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setStyleSheet("background-color: rgba(0, 0, 0, 120);"
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"border-radius: 3px;");
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}
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// doesn't take or manage its ownership
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void NavigatorView::setMainView(GraphicsView *mainView)
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{
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m_mainView = mainView;
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}
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void NavigatorView::setOpacity(qreal opacity, bool animated)
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{
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m_opacityHelper->setOpacity(opacity, animated);
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}
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void NavigatorView::updateMainViewportRegion()
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{
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if (m_mainView != nullptr) {
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m_viewportRegion = mapFromScene(m_mainView->mapToScene(m_mainView->rect()));
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update();
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}
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}
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void NavigatorView::mousePressEvent(QMouseEvent *event)
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{
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m_mouseDown = true;
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if (m_mainView) {
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m_mainView->centerOn(mapToScene(event->pos()));
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update();
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}
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event->accept();
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}
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void NavigatorView::mouseMoveEvent(QMouseEvent *event)
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{
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if (m_mouseDown && m_mainView) {
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m_mainView->centerOn(mapToScene(event->pos()));
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update();
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event->accept();
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} else {
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event->ignore();
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}
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}
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void NavigatorView::mouseReleaseEvent(QMouseEvent *event)
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{
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m_mouseDown = false;
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event->accept();
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}
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void NavigatorView::wheelEvent(QWheelEvent *event)
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{
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event->ignore();
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return QGraphicsView::wheelEvent(event);
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}
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void NavigatorView::paintEvent(QPaintEvent *event)
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{
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QGraphicsView::paintEvent(event);
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QPainter painter(viewport());
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painter.setPen(QPen(Qt::gray, 2));
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painter.drawRect(m_viewportRegion.boundingRect());
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}
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